slogoat

Mod list, Vararam Intake, Spintech Catback, hp tuners tune/Bmr Drag Bags, Nitto 555r 245/45/17's, Car is an 05 m6.

PB at Fontana on this setup
60' 1.87
1/8 8.38@84.76
1/4 13.03@105.6
DA 1048' corrected 12.89@106.7

New mods 4.10's, SLP Rear sway bar, everything else the same
PB after 5 runs
60' 1.88
1/8 8.45@82.45
1/4 13.12@106.9
DA 2460 corrected 12.74@110

DA's and corrections were posted from drag times.com. I'm not big on showing the whole corrected thing and i did it as a reference to take the DA out of the comparison. The gain was a little over a tenth and 3.3 mph. I really expected more from the gears. Has anyone else had a similar experience after changing the gears? I'm thinking that GTO's don't respond well to gears like the stangs do and maybe it was a waste of money. These were the Aussie gears which were like 679.00. One of the reasons i did gears instead of headers is that i'm in CA and wanted to stay smog legal.

impulsegoat

iTrader: (4)

I saw a guy go to 3.90s and said he could only beat his pb by .08 and was sort of saying the same thing you are. Saying he wasn't sure if the gto responded so well to gears like other cars. He was thinking about going to 3.73s. Can't remember his name tho. But at least you know your not the first. On the other hand those are some pretty good ET's w/o headers lol.

impulsegoat

iTrader: (4)

Just remembered who it was. PM 66tomcat and see what he can tell you. He has one of the fastest bolt on gto's i've heard of. Seems like a pretty knowledgeable guy to me.

slogoat

Yeah man i'm thinking pacesetters lt's are my next mod, screw the smog *****, lol. The car does consistently 60 foot better though and comes out of the hole harder. At the local 1/8 mile track(Irwindale) which has better track prep than Fontana i was able to pull a 1.77 60 ft but ran my exact same pb 1/8 mile time of 8.27. I think that maybe the motor doesn't have enough power to carry the car up top with that gear ratio and maybe headers would fix that.

impulsegoat

iTrader: (4)

Ya get a set of pacesetter's and you'll be goin 7.8s-7.9s in the 1/8 all day.

msydow

my buddy wanted to take his ms4 outta his goat until he put 3.91's in it. made all the difference in world to get it moving down low. it just sucks they are so expensive. unless they came down since he got his. think they were around 700 with the bearings.

gmantheman

My GTO with L/T and MS3 cams passed CA smog. I know a few people in local clubs know a "smog" guy.

slogoat

After i get the lt's i'll pm you, lol.

LSWONGTO

iTrader: (3)

Once you get a cam the gears will make better use of the higher rpm power. With a stock cam your hp & tq falls off up top where the 4.10s are keeping you. When you get a decent 230s cam it will shift the powerband much higher up while being a bit softer down low and the gears will really help keep it up in the higher rpms.

gmantheman

IDK but maybe 4.10s are too much for an M6 GTO. What gear are you trapping in and what is your RPM. I think the stock 3.46 gears are fine for these cars even cammed. Mustangs seem to respond well to gears. I had 4.10s in my mustang. I never ran it at the track with the 3.55s. With 26" tires I trapped in 4th at around 5800 RPMS. With 28" tires I trapped in 3rd at 6500 RPMS.

slogoat

I used to shift into 4th and then cross the finish line with the stock gears and now i shift into 4th just after the 1/8 mile and am around 5750 5800ish when i cross the line.

gmantheman

Have you ever had the car dynoed? And what RPM do you shift at? I have heard people using many different shift point but a common one is 500 above peak hp.

slogoat

Yeah before gears the car put down 355/355 after gears 350/350, i've heard the car will dyno lower after gears. i had 8 passes so i did play with shift points and the fastest et was shifting at 6500. I had the theory of maybe after the gears it lowered my peak torque rpm and shifted at 6 grand and i went a lot slower. I even shifted at 5750 and still went slow.

gmantheman

I just looked up the peak hp for a basically stock GTO and the peak hp is 5200. I thought it was higher. I dynoed my 04 GTO and because of the cams, my peak hp was at 6500. I dynoed 384/350.

gconnoyer

iTrader: (1)

The LS2's normally will make power to about 5500 +/- range.

Mine with headers, made power to 5800.

impulsegoat

iTrader: (4)

You got more than one cam?? Man must be nice

gmantheman

Damit I keep saying cams as I am coming from a mustang.

impulsegoat

iTrader: (4)

haha it's cool. I was just messin with ya. Glad you switched out of the mustang into a GTO!

icemanrd19

Im running 4.10 gears in my ford 9" 1967 camaro. Car will have 06 gto and m6 in it. Im going to save this thread and see how mine will compare. I wonder how close we would be to each other

gmantheman

I totaled the mustang at the strip but I am glad that I went to a GTO rather than another mustang. Don't get me wrong I still like mustangs but I do like the GTO better.